What is pulmonary ventilation

Inflow and outflow of air between the atmosphere and the lungs

Exchange of respiratory gases between the lungs and blood

Diffusion of oxygen in the alveoli

Volume of air breathed in and out in one breath

Which feedback mechanisms are associated with the chemical control of ventilation during exercise?

Increases in blood acidity levels

Which are involved in neural control of ventilation?

Lung stretch receptors and chemoreceptors

Sinoatrial and atrioventricular nodes

Diaphragm and accessory muscles

Which gases are exchanged at the alveoli

oxygen, carbon dioxide and nitrogen

Which statement is correct

At the alveoli oxygen moves from a high pp in the alveoli to a low pp in the capillaries

At the alveoli oxygen moves from a low pp in the alveoli to a high pp in the capillaries

At the alveoli carbon dioxide moves from a high pp in the alveoli to a low pp in the capillaries

At the alveoli carbon dioxide isn't exchanged

How does an increased erythrocyte level benefit an athlete?

By increasing the oxygen carrying capacity of the blood

By decreasing the capacity of the blood to clot in case of an injury

By increasing the ability of the body to fight infection

By decreasing viscosity of the blood

Which of the following correctly describes the sequence of excitation of heart muscle?

SA node → AV node → bundle of HIS

AV node → bundle of HIS → SA node

bundle of HIS → SA node → AV node

AV node → SA node → bundle of HIS

Which of the following is the correct order for carbon dioxide moving from the pulmonary artery to the atmosphere?

alveoli → trachea → bronchi

bronchi → trachea → bronchioles

Which of the following best explains the cardiovascular drift?

During prolonged exercise there is a lower venous return to the heart and a small decrease in blood volume due to sweating. Therefore the heart rate increases to maintain cardiac output

During prolonged exercise there is a higher venous return to the heart and a increase in blood volume. Therefore the heart rate increases to maintain cardiac output

During prolonged exercise there is a lower venous return to the heart and a decrease in blood volume due to sweating. Therefore the heart rate decreases to maintain cardiac output

What is cardiac output

the amount of blood that is pumped out of the heart each beat

the amount of blood that the heart can hold

Where does blood exert the force measured as systolic blood pressure?

On the arterial walls during ventricular contraction

On the arterial walls during ventricular relaxation

On the venous walls during ventricular contraction

On the venous walls during ventricular relaxation

What is transported in the pulmonary artery?

Deoxygenated blood to the lungs

Oxygenated blood to working muscles

Deoxygenated blood to working muscles

What does diastolic blood pressure measure?

The force exerted by blood on arterial walls during ventricular relaxation

The force exerted by blood on arterial walls during ventricular contraction

The force exerted by blood on venous walls during ventricular relaxation

The force exerted by blood on venous walls during ventricular contraction

How does the heart meet the demand for oxygenated blood during physical activity?

Increasing cardiac output, increasing stroke volume, increasing heart rate

Increasing cardiac output, decreasing stroke volume, increasing heart rate

Decreasing cardiac output, decreasing stroke volume, decreasing heart rate

Decreasing cardiac output, increasing stroke volume, increasing heart rate

What happens to someones blood pressure during dynamic exercise

Systolic blood pressure increases and diastolic blood pressure remains constant

Systolic blood pressure decreases and diastolic blood pressure increases

both systolic and diastolic blood pressure increase proportionally with exercise intensity

blood pressure remains unchanged

Which demonstrates how blood is redistributed to the working muscles during exercise? (select 2)

pracapillary sphincters of the arterioles of the non-vital organs vasoconstrict

precapillary sphincters of the arterioles of the working muscles vasodilate

precapillary sphincters of the arterioles of the working muscles vasoconstrict

pracapillary sphincters of the arterioles of the non-vital organs vasodilate

What is an adaptation of endurance exercise training?

increase in capillarisation around skeletal muscles

Decrease in arterio-venous oxygen difference

Which of the following is correct for an athlete who is exercising at a steady pace on flat terrain for a prolonged period of time?

Stroke volume gradually decreases and submaximal heart rate gradually increases

Cardiac output gradually decreases as they get used to the exercise load

Stroke volume and submaximal heart rate gradually decrease

Stroke volume and submaximal heart rate gradually increase

Which defines maximal oxygen consumption?

Maximum volume of oxygen inhaled and used per minute

Maximum volume of air exhaled after a maximum inhalation

Maximum volume of oxygenated blood ejected per minute

Maximum volume of oxygen breathed in or out per breath

Which statement is false for the average population

Women usually have a higher VO2max than men

Trained athletes usually have a higher VO2max than untrained individuals

Elderly usually have a lower VO2max than young adults

People with more muscle have a higher VO2max

IB SEHS Topic 2 - Exercise Physiology

Authored by Hannah Underhill

Physical Ed, Science

12th Grade

Used 772+ times

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40 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is vital capacity

Inspiratory reserve volume plus total lung capacity

Total lung capacity minus residual volume

Tidal volume plus inspiratory reserve volume

Residual volume minus expiratory reserve volume

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the principal structures of the ventilatory systems

Mouth, trachea, ribs, intercostal muscles

Nose, pharynx, aorta, diaphragm

Nose, trachea, bronchioles, alveoli

Mouth, larynx, diaphragm, lungs

MULTIPLE SELECT QUESTION

30 sec • 1 pt

What are the functions of the nose during inspiration (can select more than one)

To moisten the air

To diffuse oxygen from the air

To filter the air

To stop us breathing through our mouth

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the of tidal volume?

volume of air in the lungs after maximum inhalation

maximum volume of air that can be exhaled after a maximum inhalation

volume of air breathed in and out in a normal breath

additional inspired air over and above the tidal volume

volume of air still contained in the lungs after a maximal exhalation

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is residual volume

volume of air in the lungs after maximum inhalation

maximum volume of air that can be exhaled after a maximum inhalation

volume of air breathed in and out in a normal breath

additional inspired air over and above the tidal volume

volume of air still contained in the lungs after a maximal exhalation

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which is a principal structure of the ventilatory system

pulmonary artery

trachea

pulmonary valve

capillary

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is inspiratory reserve volume

volume of air in the lungs after maximum inhalation

maximum volume of air that can be exhaled after a maximum inhalation

volume of air breathed in and out in a normal breath

additional inspired air over and above the tidal volume

volume of air still contained in the lungs after a maximal exhalation

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IB SEHS Topic 2 - Exercise Physiology

What is vital capacity

What are the principal structures of the ventilatory systems

What are the functions of the nose during inspiration (can select more than one)

What is the of tidal volume?

What is residual volume

Which is a principal structure of the ventilatory system

What is inspiratory reserve volume

What is pulmonary ventilation

Which structure is responsible for moistening the air entering the ventilatory system

What is the action of the diaphragm (D) and the external intercostal muscles (EIM) during exhalation?

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